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Old Jan 21, 2009 | 10:53 PM
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Silver00V6Camaro
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Default spark plugs

Need some reconmendations on spark plugs. Right now i have Ac Delco R42LTS plugs.
Engine specs
yearone crete motor
Compression ratio: 9.5:1
Camshaft- Hydraulic roller * Valve lift:.520" * Duration @ .050" (int/exh): 218deg/228deg * Rocker arms: Stamped steel 1.6:1 ratio * Cylinder heads: Ported Vortec * Valves: Stainless steel 2.02 int/1.60 exh * Valve springs: Heavy duty * Bore x Stroke: 4.030" x 3.48"
Intake Professional Products Crosswind like rpm air gap.
Accel Hei Super Coil dizzy

Im doing the plug change becuse the ones now are fouled thanks to the Helly 750 being to rich. Now have a 600 and no problems just fouled plugs.

Last edited by Silver00V6Camaro; Jan 21, 2009 at 11:07 PM.
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Old Jan 22, 2009 | 04:55 PM
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I started a thread the other day about the same engine and plug questions. The sheet that came with the engine showed champion RS12YC but I just found a autolite equivalent. Not sure about the ones your using. But I do know that we need the long reach plugs.

Look under the tech section for reading spark plugs thread.

Sean
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Old Jan 22, 2009 | 10:05 PM
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I like autolite, but I think sparkplug choice is kind of like carburetor sizing... you will find a lot of different opinions on the best way to go.
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Old Jan 22, 2009 | 10:24 PM
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I got some AC Delco R44LTS just a little hotter than the r42's i had in there.
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